We can write out a formula in order to solve this. Since sum represents addition, if x represents the unknown number, we can write the formula: x+51=-21. Then, to solve for x, you would subtract 51 from both sides to get x=-72 which is the final answer.
Answer:
<em>56 ounces </em>= <em>7 cups.</em>
Step-by-step explanation:
The answer is c because 2+7=9 and 10-2=8 and 9 is greater than 8 so 2+7>10-2
Is it either C or D not 100% but it is one of those hope this helped